1. Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
2. Chemical Biology and Molecular Biophysics, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan
3. Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan
4. Institute of Biochemical Sciences, National Taiwan University, Taipei 106, Taiwan
5. Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan
6. Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States